Synthesis 2019; 51(23): 4348-4358
DOI: 10.1055/s-0037-1610732
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© Georg Thieme Verlag Stuttgart · New York

Catalyst-Free [2,3]-Sigmatropic Rearrangement Reactions of Photochemically Generated Ammonium Ylides

Fang Li
,
Feifei He
,
RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany   Email: rene.koenigs@rwth-aachen.de
› Author Affiliations
Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – project no. 408033718.
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Publication History

Received: 13 July 2019

Accepted after revision: 06 September 2019

Publication Date:
14 October 2019 (online)


Abstract

The rearrangement reaction of ammonium ylides furnishes valuable α,α-disubstituted amino esters. In this work, we describe the visible-light photolysis reaction of aryldiazoacetates in the presence of tertiary amines that react via a free ammonium ylide in a sigmatropic rearrangement reaction to provide amino esters in moderate to very good yields (33 examples, up to 97% yield).

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